Design data:
50/150°C
Design temperature MDF/HFO installation
Return fuel tank (1T13)
The return fuel tank shall be equipped with a vent valve needed for the vent pipe to the MDF day tank. The
volume of the return fuel tank should be at least 100 l.
Black out start
Diesel generators serving as the main source of electrical power must be able to resume their operation in
a black out situation by means of stored energy. Depending on system design and classification regulations,
it may in some cases be permissible to use the emergency generator. HFO engines without engine driven
fuel feed pump can reach sufficient fuel pressure to enable black out start by means of:
•
A gravity tank located min. 15 m above the crankshaft
•
A pneumatically driven fuel feed pump (1P11)
•
An electrically driven fuel feed pump (1P11) powered by an emergency power source
60
Product Guide Wärtsilä 34DF - 3/2012
Product Guide
6. Fuel System